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19 <b>IncrCommand: Contents
</b><br> <a href=
"#INCR _key_">INCR _key_
</a><br> <a href=
"#INCRBY _key_ _integer_">INCRBY _key_ _integer_
</a><br> <a href=
"#DECR _key_ _integer_">DECR _key_ _integer_
</a><br> <a href=
"#DECRBY _key_ _integer_">DECRBY _key_ _integer_
</a><br> <a href=
"#Return value">Return value
</a>
22 <h1 class=
"wikiname">IncrCommand
</h1>
29 #sidebar
<a href=
"StringCommandsSidebar.html">StringCommandsSidebar
</a><h1><a name=
"INCR _key_">INCR _key_
</a></h1>
30 <h1><a name=
"INCRBY _key_ _integer_">INCRBY _key_ _integer_
</a></h1>
31 <h1><a name=
"DECR _key_ _integer_">DECR _key_ _integer_
</a></h1>
32 <h1><a name=
"DECRBY _key_ _integer_">DECRBY _key_ _integer_
</a></h1>
33 <i>Time complexity: O(
1)
</i><blockquote>Increment or decrement the number stored at
<i>key
</i> by one. If the key doesnot exist or contains a value of a wrong type, set the key to thevalue of
"0" before to perform the increment or decrement operation.
</blockquote>
34 <blockquote>INCRBY and DECRBY work just like INCR and DECR but instead toincrement/decrement by
1 the increment/decrement is
<i>integer
</i>.
</blockquote>
35 <blockquote>INCR commands are limited to
64 bit signed integers.
</blockquote>
36 <h2><a name=
"Return value">Return value
</a></h2><a href=
"ReplyTypes.html">Integer reply
</a>, this commands will reply with the new value of
<i>key
</i> after the increment or decrement.